The county borders Lake Ray Hubbard in the northeast corner of the Dallas-Fort Worth Metroplex. Development there once centered on homes and recreation, but now Rockwall wants to be a place where its wealthy residents live, play -- and work.
Like many of the counties on our list, Rockwall is luring businesses and jobs from nearby big cities with generous incentives and a higher quality of life. The latest development is Harbor Heights, a seven-story 110,000 square foot office tower slated to open next year. Major corporations like L-3 Communications and Pilgrim's Pride make their home in the Rockwall Technology Park where more companies are expected to join their ranks.